WO2006079274A1 - Vortex centrifugal constant pressure pump - Google Patents

Vortex centrifugal constant pressure pump Download PDF

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Publication number
WO2006079274A1
WO2006079274A1 PCT/CN2005/002322 CN2005002322W WO2006079274A1 WO 2006079274 A1 WO2006079274 A1 WO 2006079274A1 CN 2005002322 W CN2005002322 W CN 2005002322W WO 2006079274 A1 WO2006079274 A1 WO 2006079274A1
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Prior art keywords
pump
inlet
shaft
outlet
constant pressure
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PCT/CN2005/002322
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French (fr)
Chinese (zh)
Inventor
Shihuang Li
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Shihuang Li
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Publication of WO2006079274A1 publication Critical patent/WO2006079274A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F04D29/2244—Free vortex
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/001—Shear force pumps

Definitions

  • the invention relates to a swirling centrifugal constant pressure pump, belonging to the technical field of fluid machinery and engineering equipment, and can be used in the occasion where the output pressure of the water pump is constant. Background technique
  • the pump outlet pressure is constant, such as high-rise spray fire protection systems, fire trucks, building water supply, sprinkler irrigation, mine drainage, etc.
  • water tower water supply was used in the early stage, or water storage tank was installed in high buildings.
  • people used regulator tanks to control power supply.
  • variable frequency shift control was used to change the speed of motor and centrifugal water pump to reach the outlet pressure. Constant requirements.
  • Xi'an Aerospace Huayu Special Pump Co., Ltd. see "High and Low Pressure Fire Pumps for Vehicles,, Hebei Science and Technology News, 1999, 10 (22) -2) and the Shenyang Pump Factory Institute developed a centrifugal tangential pump.
  • the object of the present invention is to provide a swirling centrifugal constant pressure pump which has the characteristics of constant pressure and high efficiency.
  • the technical solution adopted includes: a pump casing composed of a pump front cover and a pump rear cover, an inlet and an outlet provided on the pump casing, an impeller disposed in the pump casing, and a shaft supported by the bearing Wherein one end of the shaft is inserted into the pump casing from the pump rear cover through a shaft seal, the impeller being mounted at an end of the shaft, the impeller being composed of an integrally formed rear cover with a hub and blades, the blade being The inlet is tilted back and bent forwards near the exit, the improvement being that it also includes at least one of the following structural features:
  • the inner wall of the front cover of the pump has a circular arc shape
  • a self-priming chamber is provided at the inlet of the pump.
  • the shaft is vertically disposed, and a submersible motor is disposed at the upper end of the shaft, the front cover of the pump is located below, the inlet of the pump is located at the bottom, and the outlet is located at the side.
  • the shaft is vertically disposed, the front cover of the pump is located below, the inlet of the pump is an elbow, the inlet of the elbow is on a vertical plane, and the outlet is on a horizontal plane and The front cover of the pump is connected.
  • the blade outlet twisting is conducive to the generation of uniform longitudinal swirling, improving efficiency;
  • the inlet of the pump adopts a constricted taper and slightly extends into the pump body, which is favorable for the uniform flow velocity of the inlet, reduces losses, improves efficiency, and improves Advantages of cavitation performance;
  • the inner wall of the pump front cover has a circular arc shape, which can reduce the impact loss of the swirling flow, thereby improving effectiveness.
  • Figure 1 is a schematic view showing the structure of a cyclone centrifugal constant pressure pump of the present invention
  • FIG. 2 is a schematic view showing the structure of a blade of a cyclone centrifugal constant pressure pump of the present invention.
  • FIG 3 is a schematic view showing the structure of a cyclone centrifugal constant pressure pump with a self-priming chamber according to the present invention.
  • Figure 4 is a schematic view showing the structure of a cyclone centrifugal constant pressure pump with a submersible motor according to the present invention.
  • Fig. 5 is a structural schematic view showing the vertical arrangement of the cyclone centrifugal constant pressure pump of the present invention. Specific implementation
  • Figure 1 shows an embodiment of the invention, a horizontal cyclone centrifugal pump.
  • 1 is the inlet of the pump
  • 2 is the front cover of the pump
  • 3 is the blade
  • 4 is the outlet of the pump
  • 5 is the rear cover of the pump
  • 6 is the shaft
  • 7 is the bearing body.
  • the inlet 1 of the pump has a constricted conical shape and slightly protrudes into the pump body
  • the inner wall of the pump front cover 2 has a circular arc shape.
  • Figure 2 shows the structural characteristics of the blade, ex is the angle at which the blade is inclined rearward from the inlet, the selection range is 30 - 50°; the blade is bent forward near the exit, the length of the previously bent portion is the total length of the blade 1 /3 ⁇ 1/5; is the inlet angle; because the outlet of the blade is twisted, ⁇ 2 ' is the exit angle of the blade near the back cover of the impeller, ⁇ 2 " is the exit angle near the pump casing, and
  • Example 2 Swirl centrifugal pump with self-priming chamber
  • 8 is a self-priming chamber provided at the inlet 1 of the pump. This embodiment can be used for fire protection, irrigation and mine drainage.
  • the shaft 6 is vertically disposed, the pump front cover is located at the lower portion of the pump, and the submersible motor 9 is mounted on the upper portion of the shaft 6.
  • Figure 5 is a vertical arrangement of the vertical swirling centrifugal constant pressure pump of the present invention.
  • the inlet 1 of the pump is an elbow which is connected to the front cover of the pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention discloses a vortex centrifugal constant pressure pump, which belongs to hydraulic mechanical and engineering facilities technical fields and can be applied to the case that it requires a constant output pressure for a water pump. It comprises: an pump housing consisting of a front plate and a back plate, an inlet and an outlet both provided on the housing, an impeller located within the housing, a shaft supported by a bearing, wherein, one end of the shaft is inserted into the pump housing through a shaft seal, said impeller is mounted on the end of the shaft and consists of the back plate with a hub and blades, which are integrally formed, said blade are backward curved at the inlet and forward curved at the outlet, characterized in that, it further includes at least one of technical features as follows: said blades are curved at an outlet, and an outlet angle adjacent the housing is larger than an outlet angle adjacent the back plate of the impeller; an inner-wall of the front plate is shaped as an arc; the inlet is necked, extends inward and shaped as a taper. The significant characteristic lies in high efficiency, and it also has high resistance to cavitation performance and low noise and so on.

Description

旋流离心恒压泵  Swirl centrifugal constant pressure pump
技术领域 Technical field
本发明涉及一种旋流离心恒压泵， 属于流体机械及工程设备技术领 域， 可用于要求水泵输出压力不变的场合。 背景技术  The invention relates to a swirling centrifugal constant pressure pump, belonging to the technical field of fluid machinery and engineering equipment, and can be used in the occasion where the output pressure of the water pump is constant. Background technique
在很多领域需要水泵出口压力 （扬程）恒定， 如高楼喷淋消防***， 消防车， 大楼供水， 喷灌， 矿井排水等。 为了达到***压力恒定， 早期 采用水塔供水， 或高楼设贮水箱， 约上世纪 70年代后， 人们采用稳压罐 配合控制电源； 近期采用变频变速控制， 改变电机和离心式水泵的转速 达到出口压力恒定的要求。 上世纪 90年代末， 西安航天华宇特种泵有限 公司 （参见 "车用高低压消防泵，，， 河北科技报， 1999 , 10 ( 22 ) -2 ) 和沈阳水泵厂研究所研制了离心式切线泵 (部分流泵）， 这种泵用作消防 恒压泵， 扩展了原航空航天的切线泵的适用范围。 但是， 由于切线泵工 作原理的缺陷， 其效率较低， 对水质要求高， 噪声大， 特别是当流量小 时， 其噪声则更大。 另外， 它不可能带有自吸结构， 因而限制了其适用 场合。类似技术还可参见 "切线泵性能参数的精确设计法"，《水泵技术》 1994, No. 3, P7-9; "小流量切线增压泵设计" , 《水泵技术》 1996, No. 1, P9—12。  In many areas, the pump outlet pressure (head) is constant, such as high-rise spray fire protection systems, fire trucks, building water supply, sprinkler irrigation, mine drainage, etc. In order to achieve constant system pressure, water tower water supply was used in the early stage, or water storage tank was installed in high buildings. After the 1970s, people used regulator tanks to control power supply. Recently, variable frequency shift control was used to change the speed of motor and centrifugal water pump to reach the outlet pressure. Constant requirements. In the late 1990s, Xi'an Aerospace Huayu Special Pump Co., Ltd. (see "High and Low Pressure Fire Pumps for Vehicles,, Hebei Science and Technology News, 1999, 10 (22) -2) and the Shenyang Pump Factory Institute developed a centrifugal tangential pump. (Partial flow pump), this pump is used as a fire-fighting constant pressure pump, which expands the scope of application of the original aerospace tangential pump. However, due to the defects of the working principle of the tangential pump, its efficiency is low, the water quality is high, and the noise is large. Especially when the flow rate is small, the noise is even larger. In addition, it is impossible to have a self-priming structure, which limits its application. For similar techniques, please refer to "Precise Design Method of Tangential Pump Performance Parameters", "Pump Technology" 1994, No. 3, P7-9; "Design of Small Flow Tangential Booster Pump", "Pump Technology" 1996, No. 1, P9-12.
发明内容 本发明的目的是要提供一种旋流离心恒压泵， 它具有恒压、 效率高 等特点。 Summary of the invention The object of the present invention is to provide a swirling centrifugal constant pressure pump which has the characteristics of constant pressure and high efficiency.
为了实现本发明的目的， 所采取的技术方案包括： 由泵前盖和泵后 盖组成的泵壳、 设置在泵壳上的进口和出口、 设置在泵壳内的叶轮、 由 轴承支撑的轴， 其中， 轴的一端通过轴封从泵后盖***到泵壳中， 所述 的叶轮安装在轴的端部， 该叶轮由一体成型的带轮毂的后盖及叶片组成， 所述的叶片从进口处向后倾斜， 在靠近出口处再向前弯折， 其改进在于， 它还至少包括一项以下结构特征：  In order to achieve the object of the present invention, the technical solution adopted includes: a pump casing composed of a pump front cover and a pump rear cover, an inlet and an outlet provided on the pump casing, an impeller disposed in the pump casing, and a shaft supported by the bearing Wherein one end of the shaft is inserted into the pump casing from the pump rear cover through a shaft seal, the impeller being mounted at an end of the shaft, the impeller being composed of an integrally formed rear cover with a hub and blades, the blade being The inlet is tilted back and bent forwards near the exit, the improvement being that it also includes at least one of the following structural features:
( 1 ) 所述叶片的出口扭曲， 靠近泵壳的出口角大于靠近叶轮后盖的 出口角；  (1) the outlet of the blade is twisted, and the exit angle near the pump casing is larger than the exit angle near the back cover of the impeller;
( 2 ) 所述泵前盖内壁为圆弧形；  (2) the inner wall of the front cover of the pump has a circular arc shape;
( 3 ) 所述泵的进口收缩并向内伸， 呈锥形。  (3) The inlet of the pump contracts and extends inwardly and is tapered.
上述的旋流离心恒压泵中， 在泵的进口设置有自吸腔。  In the above-described cyclone centrifugal constant pressure pump, a self-priming chamber is provided at the inlet of the pump.
上述的旋流离心恒压泵中， 所述的轴呈垂直设置， 在轴的上端设置 有潜水电机， 泵前盖位于下方， 泵的进口位于底部、 出口位于侧面。  In the above-mentioned cyclone centrifugal constant pressure pump, the shaft is vertically disposed, and a submersible motor is disposed at the upper end of the shaft, the front cover of the pump is located below, the inlet of the pump is located at the bottom, and the outlet is located at the side.
上述的旋流离心恒压泵中， 所述的轴呈垂直设置， 泵前盖位于下方， 泵的进口为一弯管， 该弯管的进口在竖直面上， 其出口在水平面上且与 泵前盖贯通。  In the above-mentioned cyclone centrifugal constant pressure pump, the shaft is vertically disposed, the front cover of the pump is located below, the inlet of the pump is an elbow, the inlet of the elbow is on a vertical plane, and the outlet is on a horizontal plane and The front cover of the pump is connected.
效率高是本发明的一个显著特点。 如， 叶片出口扭曲有利于产生均 匀纵向旋流， 提高效率； 泵的进口采用收缩的锥形， 并略伸入泵体内， 有利于进口水流速度均匀， 减小损失， 提高效率， 它还具有提高汽蚀性 能的优点； 泵前盖内壁呈圆弧形， 可以減小旋流的撞击损失， 从而提高 效率。 附图说明 High efficiency is a significant feature of the present invention. For example, the blade outlet twisting is conducive to the generation of uniform longitudinal swirling, improving efficiency; the inlet of the pump adopts a constricted taper and slightly extends into the pump body, which is favorable for the uniform flow velocity of the inlet, reduces losses, improves efficiency, and improves Advantages of cavitation performance; the inner wall of the pump front cover has a circular arc shape, which can reduce the impact loss of the swirling flow, thereby improving effectiveness. DRAWINGS
图 1为本发明旋流离心恒压泵的结构示意图；  Figure 1 is a schematic view showing the structure of a cyclone centrifugal constant pressure pump of the present invention;
图 2为本发明旋流离心恒压泵的叶片的结构示意图。  2 is a schematic view showing the structure of a blade of a cyclone centrifugal constant pressure pump of the present invention.
图 3为本发明旋流离心恒压泵带有自吸腔时的结构示意图。  3 is a schematic view showing the structure of a cyclone centrifugal constant pressure pump with a self-priming chamber according to the present invention.
图 4为本发明旋流离心恒压泵带有潜水电机时的结构示意图 。  Figure 4 is a schematic view showing the structure of a cyclone centrifugal constant pressure pump with a submersible motor according to the present invention.
图 5为本发明旋流离心恒压泵立式设置时的结构示意图。 具体实施方案  Fig. 5 is a structural schematic view showing the vertical arrangement of the cyclone centrifugal constant pressure pump of the present invention. Specific implementation
下面结合附图和实施例对本发明作进一步的说明：  The present invention will be further described below in conjunction with the accompanying drawings and embodiments:
实施例 1 卧式旋流离心泵  Example 1 Horizontal Swirl Centrifugal Pump
图 1表示了本发明的一个实施例， 即卧式旋流离心泵。 图中， 1为泵 的进口， 2为泵前盖， 3为叶片， 4为泵的出口， 5为泵后盖， 6为轴， 7 为轴承体.  Figure 1 shows an embodiment of the invention, a horizontal cyclone centrifugal pump. In the figure, 1 is the inlet of the pump, 2 is the front cover of the pump, 3 is the blade, 4 is the outlet of the pump, 5 is the rear cover of the pump, 6 is the shaft, and 7 is the bearing body.
由图中可以看出本发明的一些结构特征。 如泵的入口 1 呈收缩的锥 形， 且略伸入泵体内， 泵前盖 2的内壁呈圓弧形。  Some structural features of the present invention can be seen from the figures. For example, the inlet 1 of the pump has a constricted conical shape and slightly protrudes into the pump body, and the inner wall of the pump front cover 2 has a circular arc shape.
图 2表示了叶片的结构特征， ex为叶片从进口处向后倾斜的角度， 选择范围为 30 - 50° ； 叶片靠近出口处向前弯折， 该先前弯折部分的长 度为叶片总长的 1/3~1/5； 为入口角； 由于叶片的出口扭曲， 故 β 2' 为叶片靠近叶轮后盖的出口角， β2"为靠近泵壳的出口角， |32" 大于 β2' 。 实施例 2 带自吸腔的旋流离心泵 Figure 2 shows the structural characteristics of the blade, ex is the angle at which the blade is inclined rearward from the inlet, the selection range is 30 - 50°; the blade is bent forward near the exit, the length of the previously bent portion is the total length of the blade 1 /3~1/5; is the inlet angle; because the outlet of the blade is twisted, β 2 ' is the exit angle of the blade near the back cover of the impeller, β 2 " is the exit angle near the pump casing, and |3 2 " is greater than β 2 ' . Example 2 Swirl centrifugal pump with self-priming chamber
参见图 3, 本发明的另一个实施例中， 8为设在泵的进口 1处的自吸 腔， 本实施例可用于车用消防， 灌溉和矿井排水。  Referring to Fig. 3, in another embodiment of the present invention, 8 is a self-priming chamber provided at the inlet 1 of the pump. This embodiment can be used for fire protection, irrigation and mine drainage.
实施例 3 带潜水电机的旋流离心恒压泵  Example 3 Swirl centrifugal constant pressure pump with submersible motor
参见图 4, 所示的实施例中， 轴 6垂直设置， 泵前盖位于泵的下部， 在轴 6的上部安装有潜水电机 9。  Referring to Fig. 4, in the illustrated embodiment, the shaft 6 is vertically disposed, the pump front cover is located at the lower portion of the pump, and the submersible motor 9 is mounted on the upper portion of the shaft 6.
实施例 4 立式旋流离心恒压泵  Example 4 Vertical cyclone centrifugal constant pressure pump
图 5为本发明的立式设置形式称立式旋流离心恒压泵。 由图中可知， 泵的进口 1为一弯管， 该弯管与泵前盖贯通。  Figure 5 is a vertical arrangement of the vertical swirling centrifugal constant pressure pump of the present invention. As can be seen from the figure, the inlet 1 of the pump is an elbow which is connected to the front cover of the pump.
最后所应说明的是， 以上实施例仅用以说明本发明的技术方案而非 限制， 尽管参照较佳实施例对本发明进行了详细说明， 本领域的普通技 术人员应当理解， 可以对本发明的技术方案进行修改或者等同替换， 而 不脱离本发明技术方案的精神和范围， 其均应涵盖在本发明的权利要求 范围当中。  It should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. The modifications and equivalents of the present invention are intended to be included within the scope of the appended claims.

Claims

权利要求 Rights request
1、一种旋流离心恒压泵，主要包括， 由泵前盖和泵后盖组成的泵壳、 设置在泵壳上的进口和出口、 设置在泵壳内的叶轮、 由轴承支撑的轴， 其中， 轴的一端通过轴封从泵后盖***到泵壳中， 所述的叶轮安装在轴 的端部， 该叶轮由一体成型的带轮毂的后盖及叶片组成， 所述的叶片从 进口处向后倾斜， 在靠近出口处再向前弯折， 其特征在于， 它还至少包 括一项以下结构特征：  1. A cyclone centrifugal constant pressure pump, comprising: a pump casing consisting of a pump front cover and a pump rear cover, an inlet and an outlet disposed on the pump casing, an impeller disposed in the pump casing, and a shaft supported by the bearing Wherein one end of the shaft is inserted into the pump casing from the pump rear cover through a shaft seal, the impeller being mounted at an end of the shaft, the impeller being composed of an integrally formed rear cover with a hub and blades, the blade being The inlet is inclined rearward and further bent forward near the outlet, characterized in that it also comprises at least one of the following structural features:
( 1 )所述叶片的出口扭曲， 靠近泵壳的出口角大于靠近叶轮后盖的 出口角；  (1) the outlet of the blade is twisted, and the exit angle near the pump casing is larger than the exit angle near the back cover of the impeller;
( 2 )所述泵前盖内壁为圆弧形；  (2) the inner wall of the front cover of the pump has a circular arc shape;
( 3 )所述泵的进口收缩并向内伸， 呈锥形。  (3) The inlet of the pump contracts and extends inwardly and is tapered.
2、 根据权利要求 1所述的旋流离心恒压泵， 其特征在于， 在泵的进 口设置有自吸腔。 2. A cyclone centrifugal constant pressure pump according to claim 1, wherein a self-priming chamber is provided at the inlet of the pump.
3、 根据权利要求 1所述的旋流离心恒压泵， 其特征在于， 所述的轴 呈垂直设置， 在轴的上端设置有潜水电机， 泵前盖位于下方， 泵的进口 位于底部、 出口位于侧面。 3. The cyclone centrifugal constant pressure pump according to claim 1, wherein the shaft is vertically disposed, and a submersible motor is disposed at an upper end of the shaft, the pump front cover is located below, the pump inlet is located at the bottom, and the outlet Located on the side.
4、 根据权利要求 1所述的旋流离心恒压泵， 其特征在于， 所述的轴 呈垂直设置， 泵前盖位于下方， 泵的进口为一弯管， 该弯管的进口在竖 直面上， 其出口在水平面上且与泵前盖贯通。 4. The cyclone centrifugal constant pressure pump according to claim 1, wherein the shaft is vertically disposed, the front cover of the pump is located below, the inlet of the pump is an elbow, and the inlet of the elbow is vertical. On the face, the outlet is on a level surface and penetrates the front cover of the pump.
PCT/CN2005/002322 2005-01-28 2005-12-27 Vortex centrifugal constant pressure pump WO2006079274A1 (en)

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CNU2005200015465U CN2764967Y (en) 2005-01-28 2005-01-28 Eddy flow centrifugal constant pressure pump

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009149513A1 (en) * 2008-06-13 2009-12-17 Weir Minerals Australia Ltd Improvements relating to pump seal assemblies
CN102295138A (en) * 2011-09-22 2011-12-28 长沙中联重工科技发展股份有限公司 Sprocket shaft mounting structure of lifter and lifter of asphalt mixing plant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101294580B (en) * 2007-04-26 2010-04-21 李世煌 Spiral flow constant-pressure pump
CN102797698A (en) * 2012-04-01 2012-11-28 苏州市世强流体技术有限公司 Pump impeller
DE202012102918U1 (en) 2012-08-02 2012-08-31 Suzhou Scs Fluid Technology Co., Ltd. Spiral current-constant pressure pump
CN106895024B (en) * 2017-05-04 2019-09-03 李世煌 Spiral flow constant-pressure pump

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964840A (en) * 1974-01-11 1976-06-22 Eduard Kamelmacher Blade for a centrifugal pump impeller
US4676718A (en) * 1984-08-16 1987-06-30 Oy E. Sarlin Ab Impeller for a pump, especially a vortex pump
FR2640328A1 (en) * 1988-12-09 1990-06-15 Schlumberger Cie Dowell Vane-type rotor for a pump of the centrifugal type, pump and mixer making use thereof
JPH05240192A (en) * 1992-02-28 1993-09-17 Hitachi Ltd Vortex pump
CN2369013Y (en) * 1999-05-17 2000-03-15 江苏振华泵业制造有限公司 Vertical self-sucking pump
CN2421432Y (en) * 2000-01-06 2001-02-28 曹洪禄 Vertical mud pump
CN2584889Y (en) * 2002-10-25 2003-11-05 北京建大流体技术研究院 Whirlwind centrifugal constant-pressure spray fire pumps
CN2641328Y (en) * 2003-09-03 2004-09-15 林恒远 Spiral shell shaped self-sucking type centrifugal pump

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964840A (en) * 1974-01-11 1976-06-22 Eduard Kamelmacher Blade for a centrifugal pump impeller
US4676718A (en) * 1984-08-16 1987-06-30 Oy E. Sarlin Ab Impeller for a pump, especially a vortex pump
FR2640328A1 (en) * 1988-12-09 1990-06-15 Schlumberger Cie Dowell Vane-type rotor for a pump of the centrifugal type, pump and mixer making use thereof
JPH05240192A (en) * 1992-02-28 1993-09-17 Hitachi Ltd Vortex pump
CN2369013Y (en) * 1999-05-17 2000-03-15 江苏振华泵业制造有限公司 Vertical self-sucking pump
CN2421432Y (en) * 2000-01-06 2001-02-28 曹洪禄 Vertical mud pump
CN2584889Y (en) * 2002-10-25 2003-11-05 北京建大流体技术研究院 Whirlwind centrifugal constant-pressure spray fire pumps
CN2641328Y (en) * 2003-09-03 2004-09-15 林恒远 Spiral shell shaped self-sucking type centrifugal pump

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009149513A1 (en) * 2008-06-13 2009-12-17 Weir Minerals Australia Ltd Improvements relating to pump seal assemblies
US8662551B2 (en) 2008-06-13 2014-03-04 Weir Minerals Australia Ltd. Improvements relating to pump seal assemblies
EA019991B1 (en) * 2008-06-13 2014-07-30 Уэйр Минералз Острэйлиа Лтд. Device and method of lifting and moving the housing of a seal assembly of a centrifugal pump
US9593692B2 (en) 2008-06-13 2017-03-14 Weir Minerals Australia Ltd. Pump housing support
CN102295138A (en) * 2011-09-22 2011-12-28 长沙中联重工科技发展股份有限公司 Sprocket shaft mounting structure of lifter and lifter of asphalt mixing plant
CN102295138B (en) * 2011-09-22 2013-04-03 中联重科股份有限公司 Sprocket shaft mounting structure of lifter and lifter of asphalt mixing plant

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